Modeling clay is a broad category of malleable materials used for sculpting and building projects. Its advantages and disadvantages differ depending on its use. This article covers Polymer clays, Oil-based clays, and Air-dry clays. If you’re new to sculpting with clay, you should familiarize yourself with each type so that you can choose the best one for your project.
Oil-based clays
Oil-based sculpture clays can be molded into a variety of shapes. Some types are softer than others, and some are more durable. The NSP product line is a good example of this type of clay. It is available in three main hardnesses: medium, hard, and ultra-hard. NSP is a good choice for sculpting because it holds surface details very well. It also has a higher wax content than other Chavant products.
Oil-based clays can be more malleable than air-dry clays. However, they do not dry out easily and become less malleable in cold temperatures. To heat oil-based clays, you can use a microwave or warm the clay on a heat source. This will help to make it more malleable and reduce cracking. You can also use water to smooth over cracks and cover larger areas with clay slips.
Polymer clays
Polymer clay is a versatile medium for artists. The polymer clays are flexible enough to cover any object, and they can be baked or cured at low temperatures. They also do not shrink or crack when baked, unlike natural clays. While polymer clays are not edible, they should not be used on objects that may come into contact with food.
When choosing polymer clay for your sculpture project, keep in mind that the texture of the clay will vary. Some clays are smooth and others are coarse and grainy. Depending on your style, coarser clay may be better for sculpting, while smoother clay is ideal for wheel throwing. Smoother clays do not cause skin abrasions and are more suitable for fine details.
Air-dry clays
Air-dry sculpture clays are lightweight, malleable, and non-shrinking. They are also non-toxic. Some air-dry clays are based on earthen materials while others are made of epoxy. Some are made with chemicals, but the majority are safe to use. There are many different kinds, and most are suitable for kids and adults of all ages.
When using air-dry clays, you should score the surface where you’ll attach objects. This will minimize the risk of the attachment breaking off. You can then paint the clay with acrylic paints. It’s best to apply two thin layers, as this will maintain the structural integrity of the sculpture. Another option is to use varnish or Mod Podge, an all-in-one glue and sealer.
Another benefit of air-dry sculpture clays is their ease of use. Because they don’t require a kiln, you can make your pieces in as little as a day. They’re perfect for making hand-built crafts, miniatures, jewelry, and even theatre props. They’re also suitable for creating 3D graphics. Air-dry clay is also very versatile, so you can paint them with acrylics, markers, or tempera paints. Afterward, you can finish the piece with a protective glaze to make it more durable and long-lasting.
High fire clays
High-fire clays differ from low-fire clays in that they fire at higher temperatures and have a harder surface. These clays can be used for both throwing and modeling. They can also be glazed. High-fire clays can be considered food-safe, and they are available in several different price ranges.
Before starting to fire sculpture clays, it is important to know the fire time. Some high-fire clays need 12 hours of firing, while others can take 72 hours or more. You should also be aware of the amount of drying time for different types of clays. You should also know that some clays contain sulfur, which can be toxic.
There are many different types of high-fire sculpture clays. Stoneware, for instance, is suitable for smaller Sculptures, while porcelain can be fired at a lower temperature. The texture of porcelain clay makes it harder to work with, but grog can be added to make it a bit softer and more malleable. Ball clay, on the other hand, is the most plastic and contains very limited mineral impurities. Although it is not recommended for sculpting, it can be strengthened with a grog.
PlayDough
PlayDough sculpture clay is a wonderful way for kids to express their creativity without worrying about the toxic materials in other materials. It is non-toxic, washable, and reusable. It allows kids to use their creative muscles without worrying about getting messes on their hands and clothes. It is a great way to get kids out of their shells and get them thinking creatively.
You can buy sets that include different shapes, colors, and accessories. If you’re not into the commercial variety, you can make your air-dry clay with flour and other materials.